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| 7.9 | Substitution and Ownership of Parts and Engines  |

  




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|   | (A) | Substitution of Parts. Lessee, at its own cost and expense, will promptly replace any and all Parts (inclusive of Propellers and Landing Gear) that may from time to time be
incorporated or installed in or attached to the Aircraft or any Engine that may from time to time become worn out, lost, stolen, destroyed, seized, confiscated, damaged beyond repair or permanently rendered unfit for use for any reason whatsoever.
All replacement Parts and replacement Engines shall (i) be in as good operating condition as the Part or Engine replaced assuming such replaced Part or replaced Engine was in the condition and repair required to be maintained by the terms of
this Agreement, (ii) be of comparable make and model or an improved or advanced version of the replaced Part or Engine and approved for installation on the Aircraft, (iii) have origin (back-to-birth) traceability and valid FAA
certification, and (iv) not impair the airworthiness or diminish the overall value of the Aircraft, and any such replacement Part or Engine, upon installation on the Aircraft, shall thereby be owned by Lessor and become subject to this
Agreement without the necessity of further act.  |